ok i had the same issue u must hexedit mtkflash i went and got the same pci card,and frankly the autoflasher never worked for me , so i kind of took the auto flasher method and made my on method,hex edit mtkflash put that on the usb stick,and the hacked firmware on the stick disable all your drives unplug them then go into bios and disable all ide save and exit then go into settings and boot from usb stick dont' turn on your 360 until u get to this screen where you choose where to boot from then back up your original first the cmd to type is "mtkflash r /m orig.bin" without quotations now restart and go back in and enable drives and go back in and save original firmware a few places extract the key with kdx and then patch it with kdx to xtreme firmware now save the patched firmware to the stick as well now restart the system and disable all ide again and save then shut off power on and boot to stick remember not to power on 360 till u get to the screen where u choose to boot from now choose to boot from stick and type cmd "mtkflash w /m xtreme.bin " or " mtkflash w /m /sata/ xtreme.bin" without quotes u should see it load from 0% to 100% in 3 or 4 different banks and say done. then power off pc,now when u power on 360 and what u type in cmd is very crucial and make sure u hex edit properly or it won't flash but i tried the auto flasher didn't work for me but that method worked after weeks of different methods now i'm flashed and on top of the world i hope this helps u out oh and make sure u disable and unplug all ide b4 trying to flash you'll know it worked cause you will see it load the bios when it does that 0% to 100% on banks 0,1,2,3 it will do this when u extract the original and flash the xtreme and when u extract the original you'll find it on the usb stick if u didn't know where it was saved i really hope you have the same luck i did